Snowplow



Sept. 16, 1941.

J. A. BEGLEY SNOWPLOW Filed Aug. 13, 1940 2 Sheets-Sheet l .II- E J/IMESHTO/ESO/V B'GLfK Attorney Patented Sept. 16, 1941 UNITED Q STATES PATENTOFFICE I SN OWPLOW James Atchcson Bcgley, Maniwaki, Quebec, CanadaApplication August 13, 1940, Serial No. 352,439

6 Claims.

This invention relates to snow plows, adapted to be Connected to thefront of a vehicle for forward propulsion and particularly'to animproved carriage frame and supplemental supporting frame for snowplows.

The primary object of this invention is to provide a light yet durablecarriage frame, that'will allow the plow mould board to rise at eitherend portion independently of the opposite end portion when encounteringan obstruction on the road surface. p

In contemplating the above objective, I have provided a carriage framewith pivotally mounted thrust bars which rest independently on springmembers to provide a resilient, bi-motional attachment to the supportingframe. It follows, the thrust bars are also pivotally attached to thesaid supporting frame. Thus, for example, when the left end of the mouldboard encounters an obstruction on the road bed, it will risesubstantially vertically and the left thrust loar will settle on thesupporting spring member without altering the position of the rightthrust bar and right end of the mould board to any, appreciable extent.

A further object of the invention conditional to the primary object isto provide means whereby the mould board may meet, and be elevated over,an obstruction on the road bed with a minimum amount of shock to themould hoard, carriage frame and supporting frame.

A still further object of the invention is to provide a carriage frameof extremely simple construction giving due regard to strength andefficiency. I

Still another important object of the invention is to provide asupplemental supporting frame that may be easily attached to the vehiclechassis in a manner whereby the weight of the said supporting frame andcarriage frame is supported above the vehicle springs to alleviatestress and strain on the wheels and axlesof the vehicle. I haveaccomplished thi object by securing the supporting frame to thelongitudinal members of the vehicle chassis in a mannerso that certainbrace supports are bolted or otherwise secured over the front wheels. v

A still further object is to provide adjustable thrust bar facilities sothat the mould board may be yieldably maintained at varying determinedpositions relative to the road bed.

With these and other objects in view which may appear as the descriptionproceeds the invention resides in the novel construction and arrangementof co-operating parts as hereinafter more specifically set forth,claimed and shown in the accompanying drawings forming part of thisapplication and in which:

Fig. 1 is a plan view of the improved carriage frame, showing itsposition relative to the vehicle chassis and mould board.

Fig. 2 is a rear end elevation view of the carriage frame.

Fig. 3 is a side elevation view of the device in which the carriageframe and supplemental supporting frame are disclosed. V

Fig. 4 is a perspectiveview'of the supplemental supporting frame.

Referring more in detail to the drawings in which similar referencecharacters designate corresponding parts throughout the several views, Ihave shown a vehicle chassis ID to which the supplemental supportingframe is secured. It may be noted here that, although a particularvehicle chassis has been taken for purpose of illustration, the devicemay be readily secured to any standard vehicle in a similar manner withdue consideration being given to structural modification of a minornature.

The supplemental supporting frame consists of two upright supports IIand J2 which are connected to each other by upper and lower lateral andparallel braces l3 and I4 which are welded or otherwise secured to theupright supports. I have provided channels l5 and Hi to receive thethrust bars of the carriage frame which will hereinafter be described indetail. The said channels, depend from and are partially supported-bythe lower lateral brace l4. Aligned holes I! are provided in thechannels so that the thrust bars may be adjustably secured to thesupplemental supporting frame. A lateral brace 18 is secured to thelower extremities of the said channel members [5 and Hi. In the drawingsFigure 4, I have shown the combination of angle iron and strap iron fora channel member, but it should be understood that two lengths of angleiron or one length of channel iron of predetermined size would suffice.The present combination is to provide means of adjusting the width ofthe channels l5 and IS.

The support frame is connected to the chassis ID by means of inclinedbraces l9 and 20, welded or otherwise secured to the lateral brace l8and extending rearwardly to the chassis l0 and bolted thereto abovethewheels 2| of the vehicle. The said inclined brace members aresupplemented by coacting braces 22 and 23 secured to the lateral supportl4 at either extremity and extend ing rearwardly to the chassis frame l0where they are secured in any suitable manner. A strap iron connectingmember 24 may be provided to V strengthen and relate the braces wherebythe supplementary supporting member is attached to the chassis.

Angle plates, generally designated as 25 are suitably disposedthroughout the structure at the various positions where torque is likelyto occur to alleviate this strain.

It will be seen, particularly in Fig. 3, that the usual attachments areprovided as a necessary part of the equipment but are not claimed asbeing new and useful in the art such as the headlights 26 and plowhoisting mechanism 21. It

will be readily noticed I have used angle iron" bracing throughout theconstruction of the supplemental supporting frame, however, it

should be understood that the method of attaching the said supportingframelis the primary. feashoe 32 are adapted to support the mould boarda predetermined distance 'above the. ground level and to frelieve thewearand'tear-on the:mould board.;

The-upper portion of the mould boardill is supported substantiallycentrally-by an adjustable brace rod33-which is composed of telescopicmembers pivotally attached to'the mould board by.-lugs 34 and to thecarriage frame A in the same manner 35.- A plurality of; holes 36 are:providedinthe tubular portion ofthe brace rod 33' whereby the length ofthe said rod may be varied to. position the mould board at the properangle with-respect tothe road surface.

The immediately-preceding paragraphs havev des cribed a simplegandefficient mould board and mould board attachmentlm eansthat I havesuccessfullyadapted for the purpose of'the invention, incombination withthe carriage frame to be hereinafter described in detail. However, mycarriage framesisfsuch that it maybeusedonanyrtype 0f 'mould boardattachment with slight modification and in. addition isequally successfullusedinrcombination withthe one-Way type of mould board andthe V-typeof. mould board Therefore, it should-be understood that thecarriageframe is a distinct unitadaptabletobe successfully used with themajority of snow plow mould boards. v V

In carrying out the objects associatedwiththe carriage frame, I haveprovided arectangular cal guide bars 42 and the inner vertical guidebars 43 which extend from the rearwardlend of the lower frame-31'. Across member. 44 is welded;

tothe'saidrguide bars at the upper extremity to rigidly retain.sameinposition. "The carriage frame is attached to the supplementalsupportingframe bymeans. of the-thrust bars 38 and 39 which are hingedlyconnectedto the supporting frame by means of pivot bolts 45 through thechannels I5 and i6.

Reverting to the thrust bars 33 and 39 it will be seen particularly inFig. 2, that they rest upon and are supported in the raised position byspring leaves 46 on which metal spaces 41 are situated to alleviate thewear and tear on the spring leaves. The said spring leaves are bolted at48 to the lower frame 31 and are maintained in guides attheir'extremities between the vertical guide bars 42 and spaced apartguide bars 49 which extend vertically from the base 31.

In summing up the particular advantages of the structure it will benoted that the supple- 7 mental frame may be readily attached to anddetached from the chassis by means of bolts through the said chassis andthe braces I9, 20, and 22, 23. During the period when a' more or lesspermanent use of the device is required the supplemental supportingframe is left on the vehicle chassis and the mould board and carriage; frame quick'ly and easily rrdetached to; the said supporting frame: bysimply removing' the pivot vbolts 45 from-the 1 channels I 5 and! 6 and.

allowing the thrust bars 38 and 39 to be removed from the 'saidchannelsrv a r v In-oper ationthe mould boardis held;inia roadengaging positionbythe inclination-of the thrust.

bars 38-.and =39 in combination with the adjustable brace rod 33;however, the resilient-spring supports 46 allow for vertical elevationnf=the- I mould-boardlilvas a whole, or at eitherextremity Withoutmateriallyv effectingthe' position of- -the opposite-extremity v e V VIt is .believed that the advantages of the structure shown willbeapparent from the foregoingparagraphs taken in'conjunction with theaccompanyingdrawings without further. detailed descripti'onr. I V v 7While thepreferlledmbodimentof the: inven,-

tion hasibeen disclosed it-is understood that 7 minor changes in thedetailssof constructionand arrangementiof loo-operating; parts -may be-resorted to withinthe scopeoflwhat isclaimed without departing. fromthe spirit of theinvention.. v A a I claim: y

l. An improvement in snow plows,- comprising,

in combination with a supplemental, supporting frame and snow plow mouldboard, a carriage frame to which. thernould board is attached,

thrust bars resiliently mounted on the carriageframe adaptedftobe,pivotally secured to the supplementary supporting frame so that-themould boardmaybe automatically elevated'upon encountering anobstruction.

-2. A device as claimedinfclaim 1, -wherein the thrust bars areresiliently mounted-independently of each other to support each-end ofthe mould board in separately yielding engagement.

3. An improvement in: snow plows comprising in combination with asupplemental supporting: frame and snow plowwmould board a carriageframe adjustably, secured to the said supplemental supporting frame, bythrust bars pivotally anchored to the saidcarriage frame and,

yieldingly supportedlby resilient members thereon. 1 r s 4. Animprovement in snow plows, comprising in combination With a snow plowmouldboard, mould board supporting shoes and means to adframe andsupported independently of each other by spring members, the said thrustbars being adjustable and pivotally attached to the supplementarysupporting frame by pivot bolts through channels in the said supportingframe.

5. A device as claimed in claim 4, in which the supplementary supportingframe is secured to the chassis by means of brace members which extendrearwardly of the vertical braces and the lateral channel brace.

6. An improvement in snow plows, a carriage frame having bracestructures extending therefrom to support a snow plow mould board,thrust bars pivotally anchored to the carriage frame and yieldinglysupported independently of each other by spring leaves bolted to thesaid carriage frame, guide channels to control the lateral movement ofthe said thrust bars and guide channels to control the lateral movementof the spring leaves and means to limit the upward 10 movement of thesaid thrust bars.

JAMES ATCHESON BEGLEY.

